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Cushion|Natural|GIA

0.40ct E SI1 Cushion Natural Diamond

GD • E/SI1 • GIA 1385543417

Certificate GIA 1385543417

Diamond specifications and retailer prices

From £300 GBP
As of November 6, 2026
Save £658 GBP (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £958 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 0.4ct natural cushion diamond

This 0.4ct natural cushion sits in the sub-half-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1385543417. Listed at 10 retailers as of November 4, 2026, with prices from £300 to £958, a £658 spread on the same certified stone. MOH London lists it at £958. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.40
Carat
E
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1385543417
Dimensions4.52 × 3.98 × 2.73 mm
L/W Ratio1.14
Top View
4.52 mm3.98 mm0.40 ctE / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1385543417
Side View
Table 57.0%CrownGirdle: Ext. ThickPavilionCulet: NoneDepth 68.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £958 GBP|Low: £300 GBP|High: £1,002 GBP|Avg: £563 GBP|-4.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2£300 GBP
Retailer 5£403 GBP
Retailer 6£485 GBP
Retailer 9£500 GBP
Retailer 4£516 GBP
Retailer 7£569 GBP
Retailer 8£589 GBP
Retailer 3£614 GBP
MOH London£958 GBP

34 data points across 9 retailers

10 retailers£300 GBP to £958 GBP

A
Cheapest Retailer
-
£300 GBP
B+
Retailer 2
-
£403 GBP
View
B+
Retailer 3
-
£485 GBP
View
B+
Retailer 4
-
£500 GBP
View
B+
Retailer 5
-
£516 GBP
View
B
Retailer 6
-
£569 GBP
View
B
Retailer 7
-
£589 GBP
View
B
Retailer 8
-
£614 GBP
View
Retailer 9
-
£644 GBP
View
Price last confirmed 33 days ago
Most Expensive
C
MOH London
56580BA80 · Nov 4
£958 GBP
View
9 more retailers have this diamond
Prices start from £300 GBPSave up to £658 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.40ct Cushion
£300 GBP